Title :
Fabrication of high-quality long-fiber Bragg grating by monitoring 3.1-eV radiation (400 nm) from GeO defects
Author :
Komukai, T. ; Nakazawa, M.
Author_Institution :
NTT Access Network Syst. Labs., Ibaraki, Japan
Abstract :
3.1-eV (400-nm) luminescence is generated by UV radiation at 244 nm and guided in a germanium-doped silica fiber. In this letter, we propose a new technique for fabricating a fiber Bragg grating by monitoring the power of this visible light. The UV beam is scanned so as to maximize the visible light caused by the UV radiation. This enables us to fabricate successfully a chirp-free and high quality fiber Bragg grating.
Keywords :
diffraction gratings; germanate glasses; noncrystalline defects; optical fibre fabrication; optical fibres; photoluminescence; 244 nm; 3.1 eV; 400 nm; GeO; GeO defects; SiO/sub 2/-GeO/sub 2/; UV beam scanning; UV radiation; chirp-free high quality fiber Bragg grating; eV radiation monitoring; germanium-doped silica fiber; high-quality long-fiber Bragg grating fabrication; nm luminescence; visible light; Amplitude modulation; Bragg gratings; Chirp; Fabrication; Fiber gratings; Luminescence; Optical modulation; Radiation monitoring; Refractive index; Silicon compounds;
Journal_Title :
Photonics Technology Letters, IEEE
